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Founded in Ohio in 1938 as an HVAC manufacturer’s representative, 1HVAC now supplies residential and commercial systems while manufacturing sheet-metal air-distribution products. Its unusual combination of representation and in-house production gives contractors a single source for equipment, ductwork, fans, and related boiler components. The company serves the Dayton-area market and sells across Ohio, while also operating affiliated HVAC businesses in other regions.
HVACDirect.com is an online retailer that sells heating, cooling, ventilation, and related home and commercial equipment directly to customers. Its distinctive model separates equipment purchasing from installation, connecting buyers with independent local HVAC contractors through an installer network while also offering sizing guidance and customer support.
HVR Advanced Power Components was established in the United States in 1993 as the North American affiliate of HVR International, whose resistor-making history dates to 1963 in northeast England. From its Cheektowaga facility, the company supports U.S. customers with specialized ceramic resistor solutions and application assistance for demanding power systems, backed by ISO 9001:2015-certified manufacturing within the HVR organization.
Founded by President James Lei in 2022 in a 300-square-foot Westminster garage, HW Dynamics is a small Maryland process manufacturer known for careful, repeatable control-panel work. Its 1,000-square-foot Green Street facility serves industrial customers that need custom panels built to UL 508A and CSA 22.2 standards, from single projects to recurring production.
HW Nicholson Welding & Manufacturing is a family-run fabrication and machine job shop established by Harry W. Nicholson in 1969, beginning with hitch welding in a small garage. The company has grown to more than 25 employees and became a third-generation family business under Nancy Coking, its president and owner, in 2014. It has been woman-owned since 1985 and serves customers with custom fabrication and machinery refurbishment.
Tracing its roots to Pittsburgh’s Star Fire Brick Company in 1865, HWI manufactures refractory products and engineered services that protect equipment in high-temperature industries. Now a member of the Calderys Group, the company operates 25 manufacturing sites and 20 distribution centers across its Americas footprint, with nearly 2,000 employees. HWI is particularly known in the iron and steel industry for inventing COMANCHE® ladle refractories and for its Advanced Technology and Research Center, described as the largest U.S. facility devoted to refractory development, quality assurance, and failure analysis.
HWI makes refractory products and provides high-temperature engineering and service for industries that rely on furnaces, kilns, and metalmaking equipment. Tracing its roots to 1865, the company now operates as the Americas brand of Calderys, with 25 manufacturing sites and 20 distribution centers across the Americas. Its Advanced Technology and Research Center in Pennsylvania is the largest refractory research facility in North America, supporting HWI’s specialty in solving demanding heat-containment and lining challenges.
HWI carries a 160-year Pittsburgh-area refractory heritage, beginning with the Star Fire Brick Company in 1865 and continuing today as the Americas brand of the Calderys Group. Its nearly 2,000 employees support manufacturers whose operations depend on containing extreme heat, with particular depth in iron and steel. HWI is known for COMANCHE® and for combining large-scale manufacturing with hands-on technical support.
For more than 30 years, HX Coils dba Maiocco & Associates has been the area’s specialist in HVAC and industrial heat-transfer solutions. The Broomall company is known for pairing expert design work with hands-on field support, including urgent replacement projects when aging equipment threatens a facility’s operations.
For more than 23 years, Bethlehem’s Hy Power Antenna Company has built fully assembled, resonant HF antennas and matching baluns for ham radio operators around the world. Its wire antennas are designed for practical installations—from small city lots to portable and QRP setups—and use insulated wire, stainless-steel hardware, and ceramic insulators. The company is especially known for true off-center-fed antennas that cover multiple bands through a single coax connection.
Founded in 1949, Hy-Ko Brands is a Northfield, Ohio manufacturer that has built its identity around responsive product development for retail hardware sellers. The company operates from a custom-built facility on 23 acres and holds more than 40 patents, with Midwest Fastener as its owner since 2020.
Since 1946, Hy-Tape International has manufactured its signature waterproof, latex-free zinc oxide surgical adhesives in the USA. Known as The Original Pink Tape®, the company makes tape rolls, pre-cut strips and large patches designed to secure dressings, tubes and ostomy appliances while remaining gentle on sensitive skin. Hy-Tape serves hospitals, caregivers and patients, and also partners with medical-device manufacturers that use its adhesive formula.
Founded in 1983, Hy-Tech Controls, Inc. builds turnkey industrial automation systems, including custom control panels, machine assemblies and supporting plastic components. Serving many of Cleveland’s largest industrial companies, the Oakwood Village company combines electrical, process, mechanical and pneumatic controls expertise with design, engineering and 24/7 field service. Its J-N-S plastics division adds custom parts and machine guarding for industrial and retail applications.
Founded by Dale Hyland, Hy-Tech Sales has spent more than 35 years serving industrial customers from Pittsburgh, with customer satisfaction as the principle that still shapes the business. The company is known for taking on unusual electrically controlled applications, designing solutions internally and supporting them through startup rather than stopping at distribution.
Founded and managed since 2006 by physicians and inventors, Hybernia Medical develops endovascular medical technology for selectively cooling the brain during acute ischemic stroke treatment. The Mineola company’s patented Delta-H Cooling Technology is designed to deliver rapid, controlled hypothermic protection through the same arterial access used for endovascular stroke care. Originally spun off from Columbia University, Hybernia is a clinical-development-stage company whose technology has advanced from bench engineering to preclinical testing and a first-in-human study.
Built around its founder’s more than five decades in aviation, Hybrid Aerospace Corporation is an inventor-led company developing practical propulsion technology for aircraft. It has built and deployed a patented parallel hybrid-electric engine, and now aims to license the system to aircraft-industry partners for integration into future aircraft.
HAMICo is a nonprofit innovation engine that advances manufacturing technologies from early research through commercialization. Its distinctive evergreen funding model reinvests portfolio distributions into new R&D, while facilities, workforce training, and venture-studio support help move deep-tech ideas toward viable companies. The organization collaborates with universities including The Ohio State University and Case Western Reserve University.
Founded by Dr. Jason Jones and Peter Coates in the UK in 2012 and in the U.S. in 2013, Hybrid Manufacturing Technologies Global develops AMBIT™ systems that add material, machine parts and inspect them on the same CNC, robotic or gantry platform. The McKinney-based company is best known for tool-changeable deposition heads that retrofit existing machine tools or support custom hybrid systems, including repairs and remanufacturing of high-value components. Its work combining additive and subtractive manufacturing earned the 2015 International Additive Manufacturing Award.
Born from founder William Davidson’s turbocharged 1989 CRX, Hybrid Racing makes Honda performance parts with a particular focus on K-series engine swaps. The company began exploring K-series conversions in 2002 and registered in 2003, later becoming the first to release several swap-specific solutions, including EG mounts and plug-and-play harnesses. It also backs its parts with DIY installation guides and a customer-first willingness to answer questions without attitude.
Hybridge Lab is a Rochester dental laboratory dedicated exclusively to full-arch implant restorations, producing custom fixed prostheses through digital workflows and precision craftsmanship. Founded by Dr. Frank LaMar, the lab has supported thousands of full-arch cases for more than 25 years and also provides guided-surgery planning and rapid provisional design services for dental practices. Its work is built around close collaboration with providers, from initial scans and surgical planning through final delivery.